Fault setting condition(s)

• No state change of the switch (See).

INFORMATION 

• The switch in the NVLD module (pneumatic part) changes from "closed" to "open" while the engine is running outside of the tank purging phases.
• During tank purging phases, it changes from "open" to "closed".
• If this did not happen, the tank vent valve is opened 100% directly after engine off and a check is performed to determine whether the switch changed its state from open to closed.